CN110538920A - stamping part bending and shaping device and method - Google Patents

stamping part bending and shaping device and method Download PDF

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Publication number
CN110538920A
CN110538920A CN201910511297.0A CN201910511297A CN110538920A CN 110538920 A CN110538920 A CN 110538920A CN 201910511297 A CN201910511297 A CN 201910511297A CN 110538920 A CN110538920 A CN 110538920A
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CN
China
Prior art keywords
shaping
block
bending
stamping
adjusting block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910511297.0A
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Chinese (zh)
Inventor
李保武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taizhou Kaiyi Communication Technology Co Ltd
Original Assignee
Taizhou Kaiyi Communication Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taizhou Kaiyi Communication Technology Co Ltd filed Critical Taizhou Kaiyi Communication Technology Co Ltd
Priority to CN201910511297.0A priority Critical patent/CN110538920A/en
Publication of CN110538920A publication Critical patent/CN110538920A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/002Processes combined with methods covered by groups B21D1/00 - B21D31/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/08Dies with different parts for several steps in a process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/006Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The invention discloses a stamping part bending and shaping device and method, which comprises a shaping inlet block (43) and a shaping punch (42) for driving the shaping inlet block (43) to extrude a stamping part (1), and further comprises a variable-pitch assembly (5) connected with the shaping inlet block (43), wherein the variable-pitch assembly (5) can adjust the expansion amount of the shaping inlet block (43), so that corresponding compensation amounts can be provided for stamping parts with different rebound amounts, and the device and method are more targeted and have better shaping effect.

Description

Stamping part bending and shaping device and method
Technical Field
The invention relates to shaping of a bent stamping part, in particular to a bending shaping device and method for compensating the springback amount of the stamping part after bending.
Background
For stampings that require bending, spring back typically occurs after bending. Springback is one of the most difficult to control in sheet bending defects. The reason for the springback is that the metal material is always accompanied by elastic deformation during plastic bending, and during the dynamic contact between the die and the sheet, the elastic deformation existing in the sheet is automatically released along with the elimination of the contact pressure. The driving force for springback is generally to deform towards the original shape of the sheet, the elastic deformation being related to a number of factors. In the stamping process, the raw materials cannot be completely identical due to certain tolerance ranges of the thickness, the flatness, the hardness and the like of the raw materials, and the characteristics cause unstable rebound values after bending.
As shown in fig. 1: the stamping part 1 is formed on the continuous die material belt 22, the L-shaped bending step needs to bend the bending piece 16 of the stamping part 1 into an L shape with the substrate 15, and in the prior art, the bending angle needs to be repeatedly adjusted through a shaping process according to the experience of an adjuster until the design requirement of a customer drawing is met. The specific principle is as follows: referring to fig. 2, the slotting tool 11 of the punching machine can move up and down, the downward distance of the slotting tool 11 is fixed, namely the slotting tool can only stop at a fixed position each time, when the slotting tool 11 moves down, the sliding block 12 is pushed to move leftwards, the sliding block 12 drives the shaping insert 13 to adjust the bending angle, and when the slotting tool 11 moves upwards, the spring 14 pushes the sliding block 12 to reset. And then measuring whether the bent stamping part 1 meets the design requirements, if not, repeating the steps to repeatedly verify and adjust until a qualified product is debugged.
The prior art has the following defects during shaping: firstly, because hardness, thickness, the plane degree of raw and other materials all have certain tolerance range, lead to the stamping workpiece volume of rebounding after bending different, and the slotting tool next row distance is fixed, consequently prior art is difficult to make the compensation of pertinence to the volume of rebounding of difference, and the excessive or not enough of easy plastic leads to needing to debug repeatedly can reach customer's designing requirement, has reduced production speed.
disclosure of Invention
the invention aims to provide a stamping part bending and shaping device and method aiming at the defects in the prior art, which can adjust the compensation amount in real time according to the feedback of a control system, so that the targeted compensation can be performed on different resilience amounts, and the production speed and quality are improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
On one hand, the invention provides a stamping part bending and shaping device which comprises a shaping inlet block and a shaping punch for driving the shaping inlet block to extrude a stamping part, and the stamping part shaping device further comprises a variable pitch component connected with the shaping inlet block, wherein the variable pitch component can adjust the expansion amount of the shaping inlet block.
Furthermore, the pitch-variable assembly comprises an adjusting block matched with the inclined surface of the shaping insert and a driving device connected with the adjusting block, the driving device drives the adjusting block to move, and the adjusting block drives the shaping insert to move.
furthermore, the driving device comprises a servo motor, a screw rod driven by the servo motor and a screw nut matched and connected with the screw rod, and the adjusting block is connected with the screw nut.
furthermore, the stamping part bending and shaping device further comprises a base and a sliding block in sliding fit connection with the base, and the adjusting block is in sliding fit connection with the sliding block.
Furthermore, the shaping insert is slidably coupled to the base, and an elastic element is disposed between the shaping insert and the sliding block.
Furthermore, the pitch-variable assembly further comprises a fixed seat and an elastic element connected between the fixed seat and the sliding block.
Furthermore, the stamping part bending and shaping device further comprises a control system electrically connected with the servo motor, and the control system can control the rotation number and direction of the servo motor.
On the other hand, the invention also provides a stamping part bending and shaping method, which comprises the following steps:
providing a control system, wherein the control system controls the steering and the number of turns of the servo motor;
providing a servo motor, wherein the servo motor drives a screw rod to rotate;
Providing a screw rod, wherein the screw rod drives a screw rod nut to slide;
Providing a screw nut, wherein the screw nut is connected with the adjusting block;
Providing an adjusting block, wherein the adjusting block is matched with the inclined surface of the shaping insert block, and when the adjusting block moves, the shaping insert block moves along with the adjusting block;
and providing a shaping punch head, wherein the shaping punch head drives the shaping insert to move so as to shape the bent stamping part in a targeted manner.
Compared with the prior art, the invention has the advantages that:
According to the stamping part bending and shaping device, the variable pitch assembly can change the stretching amount of the shaping insert, so that corresponding compensation amount can be provided for stamping parts with different rebound amounts, and the device is more targeted, better in shaping effect and higher in success rate.
Drawings
Fig. 1 is a schematic view of a strip of material with a portion of the stamping in a folded position.
Fig. 2 is a schematic diagram of shaping in the prior art.
FIG. 3 is a schematic structural view of the bending and shaping device for stamping parts mounted on the progressive die in the invention.
fig. 4 is a schematic view of the bending punch when bending.
fig. 5 is a schematic position diagram of the stamping part bending and shaping device.
Fig. 6 is a schematic structural view of the reforming mechanism of the present invention.
Fig. 7 is a schematic diagram of the mating of the slider, the sizing block and the base.
fig. 8 is a front view of the reforming mechanism of the base not shown.
fig. 9 is a schematic view of the reforming mechanism of the cover plate not shown.
Fig. 10 is a schematic view of the mating of the first and second faces of the present invention.
Detailed Description
The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.
As shown in fig. 3, a bending and shaping device corresponding to a preferred embodiment of the present invention is mounted on a continuous stamping die 2 and is used for shaping a bent stamping part 1.
as shown in fig. 3, progressive die 2 generally includes an upper die assembly 20, a lower die assembly 21, and a plurality of stations. The strip 22 is moved at equal intervals by a feed conveyor (not shown) of the continuous die 2, so that the strip 22 passes through each station in turn. Specifically, in fig. 3, the left end is a feeding end of the material belt 22, the right end is a discharging end of the material belt 22 after the continuous molding process, and the material belt 22 can move from left to right at equal intervals under the driving of a material conveying device (not shown).
The progressive die is provided with a plurality of stations for processing the material strip 22, and the stamping part 1 is processed and formed on the progressive die 2. Referring to fig. 3 and 4, the upper die assembly 20 is provided with a bending punch 23, and the bending punch 23 can move up and down under the driving force of hydraulic pressure, pneumatic pressure, electric power, and the like to cooperate with a bending block 211 provided on the lower die plate 210 to bend the sheet-shaped stamping part 1 into an L shape.
it should be noted that in one embodiment, the bending angle may be 90 degrees (the bending angle refers to an included angle between the base sheet 15 and the bending piece 16 of the stamping 1), but the bending angle of the stamping 1 is not limited to 90 degrees, and the bending punch 23 and the bending block 211 may be adjusted to form the stamping 1 with various bending angles. The bending of the stamping 1 belongs to the prior art and is not described in detail here.
the bending and shaping device is provided after the bending step, but it is not always necessary to provide the bending device immediately after the bending step, and other steps such as punching may be provided after the bending step.
Referring to fig. 5, the bending and shaping device further needs a detection device and a control system (not shown) as an auxiliary.
the detection device is used for detecting the resilience amount after bending, and the control system is used for calculating the corresponding compensation amount according to the feedback amount of the detection device and driving the servo motor to operate.
as shown in fig. 6 to 9, the shaping mechanism 4 includes a base 40, a tool rest block 41, a shaping punch 42, a shaping block 43, a fixing seat 44, a slider 45, an elastic member 46, and an adjusting assembly 5. The concrete structure is as follows:
The base 40 is fixed on the lower die base 212, and a sliding block 45 is slidably connected on the base, and the sliding block 45 can be connected with the base 40 through a guide rail or directly connected through a sliding groove. In this embodiment, the sliding groove 401 is formed in the base 40, the sliding groove 401 can be formed by two vertical plates 402, the sliding block 45 is connected in the sliding groove 401 in a matching manner, the vertical plates 402 are further connected with a cover plate 404, and the cover plate 404 can limit the movement of the sliding block 45 and the shaping insert 43 in the vertical direction. The base 40 may be integrally formed or may be formed from multiple pieces joined together. The slider 45 is provided with a first inclined surface 400.
The knife-in block 41 is fixedly connected to the lower die holder 212 and is arranged adjacent to the base 40 to limit the position of the sliding block 45.
The shaping punch 42 is provided on the progressive die 2 and can move up and down by a driving force such as hydraulic pressure, pneumatic pressure, electric power, or the like. At the lower portion of the shaping punch 42, a second inclined surface 420 is provided to be engaged with the first inclined surface 400. When the shaping punch 42 descends, the second inclined surface 420 presses the first inclined surface 400, thereby pushing the slider 45 to move toward the bending piece 16.
the shaping block 43 and the adjusting assembly 5 are connected to the sliding block 45, and the shaping block 43 is also located in the sliding groove 401, which is opposite to the bending piece 16, and the distance of the shaping block extending out of the base 40 can be controlled by the adjusting assembly 5. When the slider 45 is moved by the reforming punch 42, the reforming block 43 comes into contact with the bent piece 16, thereby reforming the bent piece 16. The adjusting component 5 adjusts the distance of the shaping block 43 extending out of the base 40 according to the compensation amount sent by the control system, and a resetting elastic element 47 is arranged between the shaping block 43 and a blocking wall 452 arranged on the sliding block 45, so that the shaping block 43 and the adjusting component 5 can be tightly matched, and when the adjusting component 5 moves forwards or backwards, the shaping block 43 is always contacted with the adjusting component.
The fixed seat 44 is fixed on the lower die seat 212, and is respectively arranged at two ends of the sliding block 45 together with the cutting block 41, so as to limit the sliding position of the sliding block 45. The elastic member 46 is disposed between the fixed seat 44 and the sliding block 45, and is normally in a compressed state, and when the shaping punch 42 moves upward, it can push the sliding block 45 to move toward the tool insertion block 41, thereby achieving the reset.
The return elastic member 47 and the elastic member 46 are preferably springs.
The adjusting component 5 is mounted on the sliding block 45, and the base 40 is provided with an avoiding groove 403 for accommodating the adjusting component 5. Specifically, the adjusting assembly 5 includes a bottom plate 50 mounted on the slider 45, a servo motor 51 mounted on the bottom plate 50, a lead screw 52 connected to the servo motor 51, a lead screw fixing seat 53 connected to an end of the lead screw 52, a lead screw nut 54 disposed on the lead screw 52, and an adjusting block 56 connected to the lead screw nut 55.
The screw rod fixing seat 53 is fixed on the bottom plate 50 through a bolt, and the servo motor 51 can drive the screw rod 52 to rotate, so that the screw rod nut 55 connected to the screw rod 52 is driven to move linearly, and the adjusting block 56 is driven to move linearly.
Adjustment block 56 is slidably coupled between slide 45 and orthopedic block 43 and is capable of varying the distance orthopedic block 43 extends from base 40 during movement. As shown in fig. 10, a protruding projection 450 is disposed on the slider 45, a mating groove 451 is disposed on the projection 450, and the mating groove 451 is mated with a protruding mating portion 560 disposed on the adjusting block 56. The shaping block 43 is provided with a slide groove 430 opposed to the fitting groove 451, and fitted with a projecting block 561 provided on the adjusting block 56.
The first surface 562 of the adjusting block 56 contacts with the second surface 431 of the shaping block 43, at least one of the first surface 562 and the second surface 431 is inclined, as shown in fig. 10, in this embodiment, both the first surface 562 and the second surface 431 are inclined, and the block 561 can drive the shaping block 43 to displace in the process of moving the adjusting block 56. In addition, it is easily understood that the positions of the first and second surfaces 562 and 431 for cooperating driving are not limited to the positions shown in fig. 10, but can be arranged at other positions, such as on the slider 45 and the adjusting block 56, respectively, and other equivalent embodiments can be easily found by those skilled in the art in light of the above disclosure.
It is understood that, besides the way of using the servo motor and the lead screw to drive the adjusting block 56 to move linearly, other driving devices capable of moving the adjusting block 56 according to the set parameters are also possible.
The invention also provides a bending and shaping method of the stamping part, which mainly comprises the following steps:
firstly, a control system controls the steering and the number of turns of a servo motor;
Secondly, the servo motor (51) drives the screw rod (52) to rotate
Thirdly, the screw rod (52) drives the screw rod nut (55) to slide;
Fourthly, the screw rod nut (55) is connected with the adjusting block (56);
fifthly, the adjusting block (56) is matched with the inclined surface of the shaping insert block (43), and when the adjusting block (56) moves, the shaping insert block (43) moves along with the adjusting block;
Sixthly, the shaping punch (42) drives the shaping insert (43) to move so as to shape the bent stamping part in a targeted manner.
Taking the progressive die 2 provided with the stamping part bending and shaping device of the invention as an example, when the progressive die 2 works, the stamping parts 1 on the material belt 22 are sequentially bent, detected and shaped, namely, the stamping parts 1 are firstly bent through a bending process, the bent stamping parts 1 are moved to the detection mechanism 3 for detection, the displacement sensor sends detected data to the control system, the control system obtains rebound quantity through calculation and analysis, obtains compensation quantity according to mapping, converts the compensation quantity into the number of turns of rotation required by the servo motor 51 and the rotating direction, and the servo motor 51 controls the distance of the shaping insert 43 extending out of the base 40 through the specified number of turns of rotation. After the stamping part 1 is moved to the shaping mechanism 4, the shaping punch 42 moves downwards, so that the shaping insert 43 presses the bent piece 16, and the shaping of the bent piece 16 is completed. After the reforming, the strip of material 22 may continue to move to the right for additional processing.
Obviously, the reshaping means 4 need not be actuated for a stamping 1 that meets the design requirements.
The technical scheme of the invention at least has the following advantages:
The stamping part bending and shaping device is provided with the shaping mechanism, and the shaping mechanism can change the extension length of the shaping inlet block, so that corresponding compensation quantity can be provided for stamping parts with different rebound quantities, and the stamping part bending and shaping device is more targeted and has a better shaping effect.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (8)

1. The utility model provides a stamping workpiece shaping device that bends, its includes that the plastic is gone into piece (43) and drive the plastic drift (42) that the piece (43) extruded stamping workpiece (1) are gone into in the plastic, its characterized in that: the stamping part shaping device further comprises a variable pitch component (5) connected with the shaping inlet block (43), and the variable pitch component (5) can adjust the expansion amount of the shaping inlet block (43).
2. A stamping bending and shaping device according to claim 1, wherein: the pitch-variable assembly (5) comprises an adjusting block (56) matched with the inclined surface of the shaping block (43) and a driving device connected with the adjusting block (56), the driving device drives the adjusting block (56) to move, and the adjusting block (56) drives the shaping block (43) to move.
3. A stamping bending and shaping device according to claim 2, wherein: the driving device comprises a servo motor (51), a screw rod (52) driven by the servo motor (51) and a screw rod nut (55) matched and connected with the screw rod (52), and the adjusting block (56) is connected with the screw rod nut (55).
4. A stamping bending and shaping device according to claim 2, wherein: the adjusting device also comprises a base (40) and a sliding block (45) which is in sliding fit with the base (40), wherein the adjusting block (56) is in sliding fit with the sliding block (45).
5. A stamping part bending and shaping device according to claim 4, wherein: the shaping insert (43) is connected to the base (40) in a sliding manner, and an elastic element (47) is arranged between the shaping insert and the sliding block (45).
6. A stamping part bending and shaping device according to claim 4, wherein: the pitch-variable assembly (5) further comprises a fixed seat (44) and an elastic element (46) connected between the fixed seat (44) and the sliding block (45).
7. a stamping bending and shaping device according to claim 2, wherein: the device also comprises a control system electrically connected with the servo motor (51), and the control system can control the rotation number and direction of the servo motor (51).
8. A bending and shaping method for stamping parts is characterized by comprising the following steps:
Providing a control system which controls the steering and the number of turns of the servo motor (51);
Providing a servo motor (51), wherein the servo motor (51) drives a screw rod (52) to rotate;
Providing a screw rod (52), wherein the screw rod (52) drives a screw rod nut (55) to slide;
Providing a screw nut (55), wherein the screw nut (55) is connected with an adjusting block (56);
Providing an adjusting block (56), wherein the adjusting block (56) is matched with the inclined surface of the shaping block (43), and when the adjusting block (56) moves, the shaping block (43) moves along with the adjusting block;
And providing a shaping punch (42), wherein the shaping punch (42) drives the shaping insert (43) to move so as to shape the bent stamping part in a targeted manner.
CN201910511297.0A 2019-06-13 2019-06-13 stamping part bending and shaping device and method Pending CN110538920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910511297.0A CN110538920A (en) 2019-06-13 2019-06-13 stamping part bending and shaping device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910511297.0A CN110538920A (en) 2019-06-13 2019-06-13 stamping part bending and shaping device and method

Publications (1)

Publication Number Publication Date
CN110538920A true CN110538920A (en) 2019-12-06

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CN201910511297.0A Pending CN110538920A (en) 2019-06-13 2019-06-13 stamping part bending and shaping device and method

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111331824A (en) * 2020-03-12 2020-06-26 博众精工科技股份有限公司 Flexible circuit board pre-folding device and pre-folding method thereof
CN113102554A (en) * 2021-04-13 2021-07-13 四川建安工业有限责任公司 Shape correcting tool for front support of auxiliary frame

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110076241A (en) * 2019-03-05 2019-08-02 台州市楷毅通信技术有限公司 A kind of bending rebound intelligent compensation apparatus, the progressive die and bending springback compensation method
CN209886482U (en) * 2019-03-05 2020-01-03 台州市楷毅通信技术有限公司 Bending resilience intelligent compensation device and progressive die

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110076241A (en) * 2019-03-05 2019-08-02 台州市楷毅通信技术有限公司 A kind of bending rebound intelligent compensation apparatus, the progressive die and bending springback compensation method
CN209886482U (en) * 2019-03-05 2020-01-03 台州市楷毅通信技术有限公司 Bending resilience intelligent compensation device and progressive die

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111331824A (en) * 2020-03-12 2020-06-26 博众精工科技股份有限公司 Flexible circuit board pre-folding device and pre-folding method thereof
CN113102554A (en) * 2021-04-13 2021-07-13 四川建安工业有限责任公司 Shape correcting tool for front support of auxiliary frame

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Application publication date: 20191206

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